3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit... 67 3-1-1 External Appearance of Outdoor Unit ... 67 3-1-2 Outdoor Unit Refrigerant Circuits... 69 3-2 Outdoor Unit Refrigerant Circuit Diagrams... 75 3-3 Functions of the Major Components of Outdoor Unit... 78 3-4 Functions of the Major Components of Indoor Unit... 81 3-5 External Appearance and Refrigerant Circuit Components of BC Controller ... 82 3-6 BC Controller Refrigerant Circuit Diagrams... 85 3-7 Functions of the Major Components of BC Controller... 88
3 Major Components, Their Functions and Refrigerant Circuits
3 Major Components, Their Functions and Refrigerant Circuits
3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit
3-1-1 External Appearance of Outdoor Unit
(1) PURY-EP200, EP250, EP300, EP350YLM-A PURY-P200, P250, P300, P350, P400YLM-A(1)
Fan guards Fan guards
Fan Fan
Heat exchanger Heat exchanger
Front panels Front panels Fin guard
Fin guard
Side panel Side panel
Control box Control box
(2) PURY-EP400, EP450, EP500YLM-A PURY-P450, P500YLM-A(1)
Fan box Fan box Fan guards
Fan guards
Fans Fans
Control box Control box
Heat exchanger Heat exchanger
Front panels Front panels Fin guard
Fin guard
Side panel Side panel
Side panel Side panel
3 Major Components, Their Functions and Refrigerant Circuits
3-1-2 Outdoor Unit Refrigerant Circuits
(1) PURY-P200, P250YLM-A(1)
Check valve(CV5a)
Check valve(CV4a)
Check valve(CV6a) Check valve(CV3a) Check valve(CV9a)
Check valve(CV8a)
Check valve(CV2a) Check valve(CV7a)
4-way valve(21S4a) Solenoid valve(SV11)
Solenoid valve(SV10) Solenoid valve(SV9)
Solenoid valve (SV5b) Low-pressure check joint Low-pressure check joint(CJ2) High-pressure check joint High-pressure check joint(CJ1)
Refrigerant service valve on the high pressure side(BV2) Refrigerant service valve on the low pressure side(BV1)
Solenoid valve block (SV4a, SV4d, SV4b)
Linear expansion valve (LEV5a)
Low-pressure sensor (63LS)
High-pressure switch (63H1)
Compressor cover
Solenoid valve (SV1a) Oil separator Compressor
Accumulator
High-pressure sensor (63HS1)
(2) PURY-P300, P350, P400YLM-A(1)
4-way valve(21S4a)
Check valve(CV7a)
Solenoid valve(SV11) High-pressure check joint High-pressure check joint(CJ1) Low-pressure check joint Low-pressure check joint(CJ2)
Check valve(CV5a)
Solenoid valve (SV5b)
Refrigerant service valve on the high pressure side(BV2) Refrigerant service valve on the low pressure side(BV1)
Check valve(CV6a)
Check valve(CV3a)
Check valve(CV9a)
Check valve(CV8a)
Check valve(CV2a)
Check valve(CV4a) Solenoid valve block (SV4a, SV4d, SV4b) Linear expansion valve
(LEV5a) Accumulator Oil separator
Compressor Solenoid valve (SV1a) Compressor cover
High-pressure sensor(63HS1) High-pressure switch(63H1) Low-pressure sensor
(63LS) Solenoid valve(SV9)
Solenoid valve(SV10)
3 Major Components, Their Functions and Refrigerant Circuits (3) PURY-P450, P500YLM-A(1)
4-way valve (21S4b) Solenoid valve (SV10) Solenoid valve (SV11) Solenoid valve (SV4c) Check valve
(CV4a) Check valve (CV7b)
Check valve (CV7a)
Check valve (CV5a) Check valve (CV6b) Check valve (CV8a) Check valve (CV4b)
Check valve (CV6a)
Check valve(CV2a) Check valve(CV2b) Check valve(CV3a) Check valve(CV5b) Refrigerant service
valve on the high pressure side(BV2)
Refrigerant service valve on the low pressure side(BV1)
Solenoid valve block (SV4a, SV4d, SV4b)
Linear expansion
valve(LEV5a) Linear expansion
valve(LEV5b) Accumulator
Solenoid valve(SV1a) Solenoid valve(SV5b)
Oil separator Compressor Compressor cover Low-pressure
check joint Low-pressure
check joint(CJ2) High-pressure check joint High-pressure check joint(CJ1) High-pressure
sensor(63HS1) High-pressure
switch(63H1) Low-pressure
sensor(63LS) Solenoid valve
(SV9) 4-way valve (21S4a)
(4) PURY-EP200, EP250YLM-A
4-way valve(21S4a)
Solenoid valve(SV11)
Solenoid valve(SV7) Solenoid valve(SV9)
Solenoid valve(SV10)
Solenoid valve (SV1a) Check valve(CV7a)
Check valve(CV5a)
Check valve(CV4a) gas-liguid separator
(L/S)
Check valve(CV6a) Check valve(CV3a) Check valve(CV9a) Check valve(CV8a)
Check valve(CV2a) Low-pressure sensor (63LS)
High-pressure check joint High-pressure check joint(CJ1) Low-pressure check joint Low-pressure check joint(CJ2)
Solenoid valve (SV5b)
Refrigerant service valve on the high pressure side(BV2)
Refrigerant service valve on the low pressure side(BV1) Refrigerant service valve on the low pressure side for separately sold unit(BV3)
Accumulator
Linear expansion valve (LEV5a)
Solenoid valve block (SV4a, SV4d, SV4b)
Compressor Oil separator Compressor cover High-pressure sensor (63HS1)
High-pressure switch (63H1)
3 Major Components, Their Functions and Refrigerant Circuits (5) PURY-EP300, EP350YLM-A
4-way valve(21S4a)
Check valve(CV7a)
Check valve(CV6a)
Check valve(CV3a)
Check valve(CV9a)
Check valve(CV2a) Check valve(CV8a)
Check valve(CV4a) Check valve(CV5a) Solenoid valve
(SV11) High-pressure check joint High-pressure check joint(CJ1) Low-pressure check joint Low-pressure check joint(CJ2)
Solenoid valve
(SV5b) Solenoid valve
(SV1a) Solenoid valve (SV7) Solenoid valve(SV9)
Solenoid valve(SV10)
Refrigerant service valve on the high pressure side(BV2)
Refrigerant service valve on the low pressure side for separately sold unit(BV3)
Refrigerant service valve on the low pressure side(BV1)
Solenoid valve block (SV4b)
Solenoid valve block (SV4d)
Solenoid valve block(SV4a)
Linear expansion valve(LEV5a) gas-liguid separator(L/S)
Accumulator
Oil separator Compressor Compressor cover High-pressure sensor(63HS1) High-pressure switch
(63H1) Low-pressure sensor
(63LS)
(6) PURY-EP400, EP450, EP500YLM-A
4-way valve(21S4a) 4-way valve(21S4b)
Solenoid valve (SV11) Solenoid valve (SV9) Solenoid valve (SV10)
Solenoid valve (SV5b)
Solenoid valve (SV1a) Check valve
(CV5a)
Check valve (CV7a)
Check valve (CV6a) Check valve (CV5b) Check valve (CV7b) gas-liguid separator (L/S) Check valve (CV4b)
Check valve(CV6b)
Check valve(CV2b) Check valve(CV2a) Check valve(CV8a) Check valve(CV3a) Check valve(CV4a) Refrigerant service
valve on the high pressure side(BV2)
Linear expansion valve(LEV5a) Linear expansion valve(LEV5b)
Refrigerant service valve on the low pressure side for separately sold unit(BV3)
Solenoid valve block (SV4a, SV4b, SV4d) Refrigerant service valve on the low pressure side(BV1)
Low-pressure
sensor(63LS) Accumulator
Oil separator Compressor Compressor cover
High-pressure check joint High-pressure check joint(CJ1) Low-pressure
check joint Low-pressure check joint(CJ2) High-pressure
sensor(63HS1) High-pressure
switch(63H1) Solenoid valve
(SV4c) Solenoid valve
(SV7)
3 Major Components, Their Functions and Refrigerant Circuits
3-2 Outdoor Unit Refrigerant Circuit Diagrams
(1) PURY-P200, P250YLM-A(1)(-BS)
(2) PURY-P300, P350, P400YLM-A(1)(-BS)
O/S
TH4
CJ2
BV2 COMP
21S4a
ST1 63LS
BV1 CV8a
CV6a TH7 TH9
TH11
TH3 SV4a SV4b
SV4d Solenoid valve block
ACC
ST6 ST7 ST17
TH5
TH6
CV9a SV9
SV11 SV10
CV4a
CV2a CV7a
CV3a CV5
CJ1
SV5b ST18 HEX 63HS163H1
ST3
CP1
SV1a
LEV5a
*1
*1 CP2 CP3
CP4
CP5
O/S
TH4
CJ2
BV2 COMP
21S4a
ST1 63LS
BV1 CV8a
CV6a TH7 TH9
TH11
TH3 SV4a SV4b
SV4d Solenoid valve block
ACC
ST6 ST7 ST17
TH5
TH6
CV9a SV9
SV11 SV10
CV4a
CV2a CV7a
CV3a CV5
CJ1
SV5b ST18 HEX 63HS163H1
ST3
CP1
SV1a
LEV5a
*1
*1 CP2 CP3
CP4
CP5
(3) PURY-P450, P500YLM-A(1)(-BS)
(4) PURY-EP200, EP250YLM-A(-BS)
O/S
TH4
BV2 COMP
21S4a 21S4b
ST1BV1 CV8
CV5a
CV4a
CV3a CV2a CV6a
CV7a
TH3 TH12
SV4a SV4b
SV4c CV7b
CV4b CV5b CV6b ACC
ST7 ST6 CJ2 63LS
TH5 ST17
63HS163H1 SV9
SV10 CP4
CP2 SV4d
CV2b TH7
TH9 TH11
TH6 HEX
HEX ST3
CP1
SV1a
LEV5a LEV5b
*1
*1
CP3
SV5b CJ1
ST18 SV11
Solenoid valve block
O/S L/S
TH4
CJ2
BV2 COMP
21S4a
ST1 63LS
BV1 CV8a
CV6a TH7 TH9
TH11
TH3 SV4a SV4b
SV4d
ACC
ST7 ST6 ST17
TH5
TH6
CV9a
CV4a
CV2a CV7a
CV3a
CV5a BV3
SV5b ST18 HEX 63HS163H1
CJ1
ST3
CP1 CP5
CP4 CP2
SV1a
LEV5a
*1
*1
CP3 SV11
SV10
SV7
SV9
ST8 Solenoid valve block
3 Major Components, Their Functions and Refrigerant Circuits (5) PURY-EP300, EP350YLM-A(-BS)
(6) PURY-EP400, EP450, EP500YLM-A(-BS)
O/S L/S
TH4
CJ2
BV2 COMP
21S4a
ST1 63LS
BV1 CV8a
CV6a TH7 TH9
TH11
TH3 SV4a SV4b
SV4d
ACC
ST7 ST6 ST17
TH5
TH6
CV9a
CV4a
CV2a CV7a
CV3a
CV5a BV3
SV5b ST18HEX 63HS163H1
CJ1
ST3
CP1 CP5
CP4 CP2
SV1a
LEV5a
*1
*1
CP3 SV11
SV10
SV7
SV9
ST8 Solenoid valve block
O/S
TH4
BV2 COMP
21S4a 21S4b
ST1 BV1 BV3
CV8
CV5a
CV4a
CV3a
CV2a CV6a
CV7a
TH3 TH12
SV4a
SV7
SV4b
SV4c CV7b
CV4b CV5b CV6b ACC
ST7 ST6 CJ2 63LS
TH5 ST17
63HS163H1 SV9
SV10 CP4
CP2 SV4d
CV2b TH7
TH9 TH11
TH6 HEX
HEX ST3
CP1
SV1a
LEV5a LEV5b
*1
*1
CP3
SV5b CJ1
ST18
ST8 SV11
L/S
Solenoid valve block
3-3 Functions of the Major Components of Outdoor Unit
Part
name Symbols
(functions) Notes Usage Specifications Check method
Com-pressor MC1
(Comp1) Adjusts the amount of circulating refrigerant by adjusting the operat- ing frequency based on the oper- ating pressure data
(E)200 - (E)250 models Low-pressure shell scroll compressor
wirewound resistance 20°C [68°F] : 0.72Ω (E)300 - (E)350 models Low-pressure shell scroll compressor
wirewound resistance 20°C [68°F] : 0.32Ω (E)P400 - (E)P450, P500 models
Low-pressure shell scroll compressor
wirewound resistance 20°C [68°F] : 0.3Ω EP500 models
Low-pressure shell scroll compressor
wirewound resistance 20°C [68°F] : 0.43Ω High
pres- sure sensor
63HS1 1) Detects high pressure
2) Regulates frequency and pro- vides high-pressure protec- tion
Low pres- sure sensor
63LS 1) Detects low pressure
2) Provides low-pressure pro- tection
Pres- sure switch
63H1 1) Detects high pressure
2) Provides high-pressure pro- tection
4.15MPa[601psi] OFF set- ting
Thermis-
tor TH4
(Discharge) 1) Detects discharge air temper- ature
2) Provides high-pressure pro- tection
Degrees Celsius Resistance check
0°C[32°F] :698 kΩ 10°C[50°F] :413 kΩ 20°C[68°F] :250 kΩ 30°C[86°F] :160 kΩ 40°C[104°F] :104 kΩ 50°C[122°F] : 70 kΩ 60°C[140°F] : 48 kΩ 70°C[158°F] : 34 kΩ 80°C[176°F] : 24 kΩ 90°C[194°F] :17.5 kΩ 100°C[212°F] :13.0 kΩ 110°C[230°F] : 9.8 kΩ
Pressure 0~4.15 MPa [601psi]
Vout 0.5~3.5V 0.071V/0.098 MPa [14psi]
Pressure [MPa]
=1.38 x Vout [V]-0.69 Pressure [psi]
=(1.38 x Vout [V] - 0.69) x 145 GND (Black) Vout (White) Vcc (DC5V) (Red) Con-nector
63HS1
1 1 2 3
2 3
Pressure 0~1.7 MPa [247psi]
Vout 0.5~3.5V 0.173V/0.098 MPa [14psi]
Pressure [MPa]
=0.566 x Vout [V] - 0.283 Pressure [psi]
=(0.566 x Vout [V] - 0.283) x 145 GND (Black) Vout (White) Vcc (DC5V) (Red) Con-nector
63LS
1 1 2 3
2 3
R = 7.465k120
R = 4057 R = 7.465
25/120 t
4057 273 t1 3931 exp
[3-3 Functions of the Major Components of Outdoor Unit ]
3 Major Components, Their Functions and Refrigerant Circuits
Thermis-
tor TH3
(Pipe temperature)
Controls defrosting during heating
operation Degrees Celsius
0°C[32°F] :15 kΩ 10°C[50°F] :9.7 kΩ 20°C[68°F] :6.4 kΩ 25°C[77°F] :5.3 kΩ 30°C[86°F] :4.3 kΩ 40°C[104°F] :3.1 kΩ
Resistance check
TH7(Outdoor tem- perature)
1) Detects outdoor air tempera- 2) Controls fan operationture
TH5 Fan operated on the 63LS and
TH5 values.
TH6 Controls defrosting during heating
operation TH9
TH11 TH12 THHSInverter heat sink tem- perature
Controls inverter cooling fan
based on THHS temperature Degrees Celsius
0°C[32°F] :161 kΩ 10°C[50°F] :97 kΩ 20°C[68°F] :60 kΩ 25°C[77°F] :48 kΩ 30°C[86°F] :39 kΩ 40°C[104°F] :25 kΩ THL DCL tem-
perature DCL overheat protection Degrees Celsius
0°C[32°F] :162.2 kΩ 10°C[50°F] :98.3 kΩ 25°C[77°F] :49.1 kΩ 50°C[122°F] :17.6 kΩ 100°C[212°F] :3.3 kΩ Sole-
noid valve
SV1aDischarge-suc- tion
bypass
1) High/low pressure bypass at start-up and stopping, and capacity control during low- load operation
2) High-pressure-rise preven- tion
AC220 - 240V
Open while being powered/
closed while not being pow- ered
Continuity check with a tester
SV4a - SV4d Heat exchanger capacity control
Controls outdoor unit heat ex- changer capacity
SV5b Heat exchanger capacity control
Prevents high-pressure-rise
Controls defrost cycle AC220 - 240V
Closed while being powered/
open while not being pow- ered
SV7 Controls bypass during heating
operation AC220 - 240V
Dead: cooling cycle Live: heating cycle
SV10 Switching when Continuous heat-
ing mode AC220 - 240V
Open while being powered/
closed while not being pow- ered
SV11
SV9 High-pressure-rise prevention AC220 - 240V
Open while being powered/
closed while not being pow- ered
Part
name Symbols
(functions) Notes Usage Specifications Check method
R = 15k0
R = 3460 R = 15
0/80
t 3460 273 t1 2731 exp
R = 17k50
R = 4016 R = 17
25/120
t 4016 273 t1 3231 exp
R = 3.3k100 B = 3970 R =3.3
0/100
t 3970 273 t1 3731 exp
LEV LEV5a,b LEV5b is only on the P450, P500, EP400 - EP500 models.
Evaporating temperature control DC12V
Opening of stepping motor driving valve 0-3000 pulses
Refer to the sec- tion "Continuity Test with a Tes- ter".
Continuity be- tween white and orange.
Continuity be- tween yellow, red, and blue.
4-way
valve 21S4a Changeover between heating and
cooling AC220 - 240V
Dead: cooling cycle Live: heating cycle
Continuity check with a tester
21S4b P450,
P500, EP400- EP500 models only Fan mo-
tor FAN motor 1,2 FAN motor 2 is only on the P450, P500, EP400- EP500 models.
Regulates the heat exchanger ca- pacity by adjusting the operating frequency and operating the pro- peller fan based on the operating pressure.
AC380-460V, 920W
name (functions) Notes Usage Specifications Check method
Yellow White Orange
Red Blue M
3 Major Components, Their Functions and Refrigerant Circuits
3-4 Functions of the Major Components of Indoor Unit
Part
Name Symbol
(functions) Notes Usage Specification Check method
Linear expan- sion valve
LEV 1) Adjusts superheat at the
indoor heat exchanger outlet during cooling 2) Adjusts subcool at the in-
door unit heat exchanger outlet during heating
DC12V
Opening of stepping motor driving valve 0-(1800) pulses
Refer to the section
"Continuity Test with a Tester".
Continuity between white, red, and or- ange.
Continuity between yellow, brown, and blue.
Thermis-
tor TH1
(Suction air tem- perature)
Indoor unit control (Thermo)
0°C [32°F]:15 kΩ 10°C [50°F] :9.7 kΩ 20°C [68°F]:6.4 kΩ 25°C [77°F] :5.3 kΩ 30°C [86°F] :4.3 kΩ 40°C [104°F] :3.1 kΩ
Resistance check
TH2 (Pipe tempera- ture)
1) Indoor unit control (Frost prevention, Hot adjust) 2) LEV control during heat-
ing operation (subcool detection).
TH3 (Gas pipe tem- perature)
LEV control during cooling op- eration (superheat detection) TH4 Outdoor air tem-
perature)*1
Indoor unit control (Thermo)
Temperature sensor (Indoor air temperature)
Indoor unit control (Thermo)
*1. Indicates gas pipe temperature on the PKFY-P VHM-E and PKFY-P VKM-E models.
Yellow White
Red Orange
Brown Blue M
1 273+t R0=15k
R0/80=3460
Rt =15exp{3460( - )}2731
3-5 External Appearance and Refrigerant Circuit Components of BC Controller
1. CMB-P V-G1, GA1, HA1 (1) Front
(2) Rear view <G1 type>
Liquid pipe (Indoor unit side)
Gas pipe (Indoor unit side)
TH12
TH15
TH16 TH11
SVM1 LEV1LEV3 PS1
PS3
Tube in tube heat exchanger Gas/Liquid separator
3 Major Components, Their Functions and Refrigerant Circuits (3) Rear view <GA1 type>
(4) Rear view <HA1 type>
TH12 TH15
TH16
TH11
SVM2
SVM1 LEV1 LEV3
LEV2 PS3 PS1
Tube in tube heat exchanger Gas/Liquid separator
Gas/Liquid separator
LEV3
LEV1
SVM2 SVM2b
SVM1b SVM1 TH15 TH16
TH12 TH11
PS1
PS3
Tube in tube heat exchanger
2. CMB-P V-GB1, HB1 (1) Front
(2) Rear view
Liquid pipe (Indoor unit side)
Gas pipe (Indoor unit side)
TH15 TH12
LEV3
3 Major Components, Their Functions and Refrigerant Circuits
3-6 BC Controller Refrigerant Circuit Diagrams
(1) CMB-P104 - P1016V-G1
TH15 TH12
LEV3
LEV1 TH16
PS3 PS1 TH11
SVM1 Gas/Liquid
separator
Check valve block Solenoid valve block
SVC/SVA/SVB
(2) CMB-P108, P1010, P1013, P1016V-GA1 (main)
(3) CMB-P104, P108V-GB1 (sub)
TH15
HIC-B
HIC-A TH12
LEV3 SVM2
LEV1 LEV2
TH16 PS3
PS1 TH11
SVM1
Solenoid valve block
Check valve block Gas/Liquid
separator
SVC/SVA/SVB
TH15 TH12
HIC-C CP
LEV3
Check valve block Solenoid valve block
SVC/SVA/SVB
3 Major Components, Their Functions and Refrigerant Circuits (4) CMB-P1016V-HA1 (main)
(5) CMB-P1016V-HB1 (sub)
TH15
TH12 LEV3
LEV1 TH16
PS1 PS3
TH11
SVC/SVA/SVB
SVM1
SVM2
HIC-A
HIC-B
SVM1b
SVM2b Gas/Liquid
separator
TH15 TH12
HIC-C CP
LEV3
Check valve block Solenoid valve block
SVC/SVA/SVB
3-7 Functions of the Major Components of BC Controller
(1) G1 type
Part name Symbols
(functions) Part
code Usage Specifications Check method
Pressure
sensor PS1
(High pres- sure side)
1) Detects high pressure 2) LEV control
PS3(Intermedi- ate pres- sure)
1) Detects intermediate pressure
2) LEV control
Thermistor TH11 (Liquid inlet tempera- ture)
LEV control
(Liquid level control)
0°C[32°F] : 15 kΩ 10°C[50°F] :9.7 kΩ 20°C[68°F] :6.4 kΩ 25°C[77°F] :5.3 kΩ 30°C[86°F] :4.3 kΩ 40°C[104°F] :3.1 kΩ TH12(Bypass
outlet tem- perature)
LEV control (Superheat)
TH15(Bypass in- let tempera- ture)
LEV control (Superheat)
TH16 (Liquid re- frigerant tempera- ture)
LEV control (Subcool)
Solenoid
valve SVM1 Opens during cooling and de-
frost modes AC220-240V
Open while being powered/
closed while not being pow- ered
Continuity check with a tester
SVA Provides refrigerant to indoor
unit in cooling operation
SVB Provides refrigerant to indoor
unit in heating operation
SVC Provides refrigerant to indoor
unit in cooling operation
LEV LEV1 1) Liquid level control
2) Pressure differential con- trol
DC12V
Opening of a valve driven by a stepping motor
0-2000 pulses
Same as indoor LEV LEV3
Pressure 0~4.15 MPa [601psi]
Vout 0.5~3.5V 0.071V/0.098 MPa [14psi]
Pressure [MPa]
=1.38 x Vout [V]-0.69 Pressure [psi]
=(1.38 x Vout [V] - 0.69) x 145 GND (Black) Vout (White) Vcc (DC5V) (Red) Con-nector
PS1
1 1 2 3
2 3
R = 15k0 R = 3460 R = 15
0/80
t 3460 273 t1 2731 exp
3 Major Components, Their Functions and Refrigerant Circuits (2) GA1 type
Part name Symbols
(functions) Part
code Usage Specifications Check method
Pressure
sensor PS1
(High pres- sure side)
1) Detects high pressure 2) LEV control
PS3(Intermedi- ate pres- sure)
1) Detects intermediate pressure
2) LEV control
Thermistor TH11 (Liquid inlet tempera- ture)
LEV control
(Liquid level control)
0°C[32°F] : 15 kΩ 10°C[50°F] :9.7 kΩ 20°C[68°F] :6.4 kΩ 25°C[77°F] :5.3 kΩ 30°C[86°F] :4.3 kΩ 40°C[104°F] :3.1 kΩ TH12(Bypass
outlet tem- perature)
LEV control (Superheat)
TH15(Bypass in- let tempera- ture)
LEV control (Superheat)
TH16 (Liquid re- frigerant tempera- ture)
LEV control (Subcool)
Solenoid
valve SVM1 Opens during cooling and de-
frost modes AC220-240V
Open while being powered/
closed while not being pow- ered
Continuity check with a tester SVM2 Pressure differential control
SVA Provides refrigerant to indoor
unit in cooling operation
SVB Provides refrigerant to indoor
unit in heating operation
SVC Provides refrigerant to indoor
unit in cooling operation
LEV LEV1 1) Liquid level control
2) Pressure differential con- 3) Subcool controltrol
DC12V
Opening of a valve driven by a stepping motor
41 - 3000 pulses
Same as indoor LEV
LEV3 DC12V
Opening of a valve driven by a stepping motor
0 - 2000 pulses
Pressure 0~4.15 MPa [601psi]
Vout 0.5~3.5V 0.071V/0.098 MPa [14psi]
Pressure [MPa]
=1.38 x Vout [V]-0.69 Pressure [psi]
=(1.38 x Vout [V] - 0.69) x 145 GND (Black) Vout (White) Vcc (DC5V) (Red) Con-nector
PS1
1 1 2 3
2 3
R = 15k0 R = 3460 R = 15
0/80
t 3460 273 t1 2731 exp
(3) GB1 type
Part name Symbols
(functions) Part
code Usage Specifications Check method
Thermistor TH12 (Bypass outlet tem- perature)
LEV control (Superheat)
0°C[32°F] : 15 kΩ 10°C[50°F] :9.7 kΩ 20°C[68°F] :6.4 kΩ 25°C[77°F] :5.3 kΩ 30°C[86°F] :4.3 kΩ 40°C[104°F] :3.1 kΩ TH15(Bypass in-
let tempera- ture)
LEV control (Superheat)
Solenoid
valve SVA Provides refrigerant to indoor
unit in cooling operation AC220-240V
Open while being powered/
closed while not being pow- ered
Continuity check with a tester
SVB Provides refrigerant to indoor
unit in heating operation
SVC Provides refrigerant to indoor
unit in cooling operation
LEV LEV3 Pressure differential control DC12V
Opening of a valve driven by a stepping motor
0-2000 pulses
Same as indoor LEV
R = 15k0
R = 3460 R = 15
0/80
t 3460 273 t1 2731 exp
3 Major Components, Their Functions and Refrigerant Circuits (4) HA1 type
Part name Symbols
(functions) Part
code Usage Specifications Check method
Pressure
sensor PS1
(High pres- sure side)
1) Detects high pressure 2) LEV control
PS3(Intermedi- ate pres- sure)
1) Detects intermediate pressure
2) LEV control
Thermistor TH11 (Liquid inlet tempera- ture)
LEV control
(Liquid level control)
0°C[32°F] : 15 kΩ 10°C[50°F] :9.7 kΩ 20°C[68°F] :6.4 kΩ 25°C[77°F] :5.3 kΩ 30°C[86°F] :4.3 kΩ 40°C[104°F] :3.1 kΩ TH12(Bypass
outlet tem- perature)
LEV control (Superheat)
TH15(Bypass in- let tempera- ture)
LEV control (Superheat)
TH16 (Liquid re- frigerant tempera- ture)
LEV control (Subcool)
Solenoid
valve SVM1 Opens during cooling and de-
frost modes AC220-240V
Open while being powered/
closed while not being pow- ered
Continuity check with a tester
SVM1b Opens during cooling and de-
frost modes
SVM2 Pressure differential control SVM2b Pressure differential control
SVA Provides refrigerant to indoor
unit in cooling operation
SVB Provides refrigerant to indoor
unit in heating operation
SVC Provides refrigerant to indoor
unit in cooling operation
LEV LEV1 1) Liquid level control
2) Pressure differential con- 3) Subcool controltrol
DC12V
Opening of a valve driven by a stepping motor
41 - 3000 pulses
Same as indoor LEV
LEV3 DC12V
Opening of a valve driven by a stepping motor
0 - 2000 pulses
Pressure 0~4.15 MPa [601psi]
Vout 0.5~3.5V 0.071V/0.098 MPa [14psi]
Pressure [MPa]
=1.38 x Vout [V]-0.69 Pressure [psi]
=(1.38 x Vout [V] - 0.69) x 145 GND (Black) Vout (White) Vcc (DC5V) (Red) Con-nector
PS1
1 1 2 3
2 3
R = 15k0 R = 3460 R = 15
0/80
t 3460 273 t1 2731 exp
(5) HB1 type
Part name Symbols
(functions) Part
code Usage Specifications Check method
Thermistor TH12 (Bypass outlet tem- perature)
LEV control (Superheat)
0°C[32°F] : 15 kΩ 10°C[50°F] :9.7 kΩ 20°C[68°F] :6.4 kΩ 25°C[77°F] :5.3 kΩ 30°C[86°F] :4.3 kΩ 40°C[104°F] :3.1 kΩ TH15(Bypass in-
let tempera- ture)
LEV control (Superheat)
Solenoid
valve SVA Provides refrigerant to indoor
unit in cooling operation AC220-240V
Open while being powered/
closed while not being pow- ered
Continuity check with a tester
SVB Provides refrigerant to indoor
unit in heating operation
SVC Provides refrigerant to indoor
unit in cooling operation
LEV LEV3 Pressure differential control DC12V
Opening of a valve driven by a stepping motor
0-2000 pulses
Same as indoor LEV
R = 15k0
R = 3460 R = 15
0/80
t 3460 273 t1 2731 exp